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See Chinese contents: GB/T 20042.3-2022 GB/T 20042.3-2022: Proton exchange membrane fuel cell - Part 3: Test method for proton exchange membrane
This document describes the thickness uniformity test, proton conductivity test, equivalent weight test, air permeability test, tensile property test, swelling rate test, and water uptake test for proton exchange membranes used in proton exchange membrane fuel cells. This document applies to all types of proton exchange membranes.
